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  1. Auto-gear Muncie M21Y

    Forum Classifieds
    Just pulled my Autogear Super Case M21Y Muncie out of my 67. Also have Denny"s driveshaft for it and factory crossmember Trans has shifter mounted but will need a handle. 1st: 2.199 2nd: 1.506 3rd: 1.0 4th: 0.857 Input 26 spline Output 32 spline $1500.00 plus shipping
  2. m20 Muncie, Fresh rebuild and Hurst shifter for trade

    Forum Classifieds
    I have a 1968 M20 that was professionally rebuild for me. It has not been installed since. I also have the correct Hurst shifter and kit for the first gen Camaro. Both new still in the box. I really don't want to sell them out right but will consider offers. I am in need of either a t56 or a...
  3. 67-68 Reverse Switch on 69 Transmission

    Transmission & Driveline
    Hey everybody, Got a '69 camaro with Muncie 4 Speed and factory Hurst shifter. Need to redo reverse lights because I do not have lock-out linkage installed (nor think I can install it with headers on car). I don't like the aftermarket hurst switch personally, with the exposed electrical...
  4. Help identifying this reverse lockout rod?

    Transmission & Driveline
    I've had this reverse lockout rod lying around the garage for a while, I'm trying to figure out what it goes to. It's 14 3/8" long and stamped 5767. Any info on it would be much appreciated Thanks
  5. Muncie trans lever retention? bolts or nuts

    Transmission & Driveline
    When did the retention mechanism for shift levers on the Muncie transmissions change? At some point they changed from studs with nuts to a 'bolt'. Can anyone tell me the timing (ie. which year) for that change?
  6. M22Z - Jody's Transmissions

    Transmission & Driveline
    Hi everyone, I wanted to come on here and give a huge recommendation for Jody of Jody’s Transmissions. After reading through the forums for months and months, I kept reading great things about Jody. Once I decided to move forward with my replacing my busted Muncie I reached out to him. We...
  7. Powerglide to Muncie question

    Transmission & Driveline
    I would like to install a Muncie 4-speed in place of the Powerglide in my ’68 Camaro. Is there a way to do this without having to cut the floorboard? I read somewhere about an offset shifter from Hurst that eliminates having to modify the floorboard, but from what I’ve seen online I think that...
  8. Shifter hitting on trans tunnel

    Transmission & Driveline
    My shifter doesn't fit the hole in the trans tunnel. I recently changed to the 67 Hurst mount that attaches to the transmission mount and u-bolt around the very end of the tailhousing. I have a Hurst Competition Plus shifter. The shifter can rotate forward some on the mount. But with it...
  9. Speedo gears, need help

    Transmission & Driveline
    I replaced my speedo driven gear tonight with a 17 tooth purple part# 3987917 and I'm still 8 MPH slow on the speedo. So when the speedo reads 20 I'm going 28 or when the speedo reads 40 I'm going 48 MPH. So is there a smaller tooth count driven gear that I can go to? Or is there something else...
  10. Muncie Case Damage

    Transmission & Driveline
    I got my Muncie pulled apart today. I was expecting some carnage inside... and wasn't disappointed! My 1st gear had a few teeth completely stripped off and the countershaft had a number of teeth worn down as a result. It was ugly. I will of course need to order replacements for those two...
  11. Removed Muncie

    Transmission & Driveline
    Hey everyone, I'm rebuilding the Muncie 4 speed from my 67 and just finished Step 1: pulled it out of the car. That crossmember was not fun to get out... As I was looking inside the bellhousing, I noticed that the hole that the transmission slides into didn't really look straight. Is this...
  12. HELP with shifter linkage rods

    Transmission & Driveline
    Hi guys, I was given a box with two shifter bodies, and a bunch of loose rods. Can't find numbers on some of the rods, and the rods that do have numbers I have not been able to find information online for them. One of the shifter bodies is a Hurst (says so, Hurst part#3915401), the other shifter...
  13. Replaced m21 tail shaft - with issues

    Transmission & Driveline
    I have a m21 trans which had a Pontiac style Tail shaft. I replaced it with a Chevy one And everything seemed to go well when I swapped Them in my 67 camaro. Once everything went together, I could get The car to only go in reverse! There appears To be no neutral and none of the gears engage...
  14. '69 M21 transmission

    What's it worth?
    I've got a Feb '69 Muncie M21 P9B14B in very good condition. I would rather have a M20, so I'm thinking of selling the M21. It's dirty, but inside it looks very good. No ears broke off and no holes stripped as far as I can tell. It just needs to be cleaned up and new seals around the shifter...
  15. Chevy M-21 4-spd out of '69 Z/28 w/ Hurst Comp Plus

    Forum Classifieds
    M-21 4-speed trans pulled from my 1969 Z/28. Case code: 3925661 Tail code: 3846429 Side Cover Code: 3884685 Bearing Retainer Code: 3915020 Shifter: Hurst Competition/Plus with all linkage - shifter is offset to center the tunnel correctly for a factory console car. 10 spline input, 27 spline...
  16. Muncie M20 Rebuild - Normal Gear Wear?

    Transmission & Driveline
    Decided to tackled the rebuild of my M20 on my own and I finally got it completey disassembled. All internals seem to be in good shape, with the exception of the reverse and reverse idler gears. Before I order a rebuild kit for all the typical wear parts, I want to get opinions on the level of...
  17. 1968 Rally Sport

    1968 Rally Sport

  18. Removing the front bearing on a muncie

    Transmission & Driveline
    Hey I have my transmission out of the car to replace the clutch and I wanted to update the front retainer nut and gasket since I had a slight leak and it was out anyways. I also ordered a new front bearing since it looked worn out. I had no problem getting the nut off but how do I remove the...
  19. 3rd and 4th gear suddenly aren't there

    Transmission & Driveline
    Need some help. 68 Camaro RS/SS 350, muncie 4spd hurst shifter, 12 bolt 4.10 gear I drove to a town about a half hour away last night, parked my car, ate, and when I got back in to drive home, I didn't have 3rd or 4th gear. (needless to say, the drive home was more like an hour) Can anybody...
  20. Muncie 4-speed shifter arms = where to get

    Transmission & Driveline
    Hi all! Been having a great time in my 67 Camaro until I parked it in the garage one night, started it the next morning, and my gearing was all out of whack. (Still in gear, even in neutral - whee!) Pulled off the linkages and just flipped the arms to verify the transmission seems to be ok...